Class: MatchClause

Defined in: lang-cypher/src/ast/query.ts:60

A MATCH clause that matches graph patterns against the database.

Implements

• ASTNode

Constructors

Constructor

new MatchClause(pattern, where?): MatchClause

Defined in: lang-cypher/src/ast/query.ts:63

Parameters

Parameter	Type	Description
pattern	PatternElChain[]	One or more path patterns to match.
where?	ASTNode	Optional WHERE predicate; undefined if absent.

Returns

MatchClause

Properties

optional

optional: boolean = false

Defined in: lang-cypher/src/ast/query.ts:62

True when OPTIONAL MATCH; unmatched rows produce nulls instead of being filtered out.

---

pattern

pattern: PatternElChain[]

Defined in: lang-cypher/src/ast/query.ts:65

One or more path patterns to match.

---

where?

optional where?: ASTNode

Defined in: lang-cypher/src/ast/query.ts:67

Optional WHERE predicate; undefined if absent.

Methods

accept()

accept<Ret, Arg>(visitor, arg?): Ret

Defined in: lang-cypher/src/ast/query.ts:70

Dispatches this node to the matching method on visitor.

Type Parameters

Type Parameter
Ret
Arg

Parameters

Parameter	Type
visitor	CypherVisitor<Ret, Arg>
arg?	Arg

Returns

Ret

Implementation of

ASTNode.accept